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Modern Computer Architecture and Organization

You're reading from   Modern Computer Architecture and Organization Learn x86, ARM, and RISC-V architectures and the design of smartphones, PCs, and cloud servers

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Product type Paperback
Published in Apr 2020
Publisher Packt
ISBN-13 9781838984397
Length 560 pages
Edition 1st Edition
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Author (1):
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Jim Ledin Jim Ledin
Author Profile Icon Jim Ledin
Jim Ledin
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Table of Contents (20) Chapters Close

Preface 1. Section 1: Fundamentals of Computer Architecture
2. Chapter 1: Introducing Computer Architecture FREE CHAPTER 3. Chapter 2: Digital Logic 4. Chapter 3: Processor Elements 5. Chapter 4: Computer System Components 6. Chapter 5: Hardware-Software Interface 7. Chapter 6: Specialized Computing Domains 8. Section 2: Processor Architectures and Instruction Sets
9. Chapter 7: Processor and Memory Architectures 10. Chapter 8: Performance-Enhancing Techniques 11. Chapter 9: Specialized Processor Extensions 12. Chapter 10: Modern Processor Architectures and Instruction Sets 13. Chapter 11: The RISC-V Architecture and Instruction Set 14. Section 3: Applications of Computer Architecture
15. Chapter 12: Processor Virtualization 16. Chapter 13: Domain-Specific Computer Architectures 17. Chapter 14: Future Directions in Computer Architectures 18. Answers to Exercises 19. Other Books You May Enjoy

Simultaneous multithreading

As we learned in previous chapters, each executing process contains one or more threads of execution. When performing multithreading using time-slicing on a single-core processor, only one thread is in the running state at any moment in time. By rapidly switching among multiple ready-to-execute threads, the processor creates the illusion (from the user's viewpoint) that multiple programs are running simultaneously.

This chapter introduced the concept of superscalar processing, which provides a single processing core with the ability to issue more than one instruction per clock cycle. The performance enhancement resulting from superscalar processing may be limited when the executing sequence of instructions does not require a mixture of processor resources that aligns well with the capabilities of its superscalar functional units. For example, in a particular instruction sequence, integer processing units may be heavily used (resulting in pipeline...

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